Smartphone Use and Hand Function in Young Adults
ConditionSmartphone Addiction
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-35
SponsorSaglik Bilimleri Universitesi
About this trial
This observational cross-sectional study aims to investigate the relationship between daily smartphone usage duration and hand function parameters in young adults. Specifically, the study will examine the association between smartphone screen time and dominant hand grip strength, thumb strength, and wrist and thumb proprioception. Healthy individuals aged 18-35 years will be included. All participants will undergo a single-session assessment including measurement of smartphone usage duration, hand grip strength, pinch strength, and joint position sense of the wrist and thumb. The findings are expected to provide insight into the potential effects of prolonged smartphone use on hand function and proprioceptive performance in young adults.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Healthy adults
Aged between 18 and 35 years
Voluntary participation in the study
Disqualifiers
History of hand or wrist surgery
Fracture or serious injury in the hand/thumb within the last 6 months
Neurological disorders
Rheumatologic diseases
Trial population
Healthy Universitty Student
Trial design
Design model
Case-control
Time perspective
Cross-sectional
Treatments tested in this trial
Assessment Protocol
Other interventionAll participants will undergo a standardized assessment protocol including measurement of smartphone addiction level, daily smartphone screen time from the past 7 days, dominant hand grip strength, thumb pinch strength, wrist proprioception, and thumb proprioception in a single session
Treatment groups
84 Participants
are divided into 2 treatment groupsGroup A: Observational Group: Smartphone-Addicted Participants1 intervention
Group B: Observational Group: Non-Addicted Participants1 intervention
Trial outcomes
Primary outcomes
1
Hand Grip Strength
Hand grip strength will be measured using a hydraulic hand dynamometer. The participant will be in a seated position with the elbow flexed at 90 degrees. Three measurements will be taken with a 10-second rest between each, and the average value will be recorded in kilograms (kg).
Time frame
Single assessment at baseline2
Thumb Pinch Strength
Thumb muscle strength will be measured using a pinchmeter. The participant will be seated with the elbow flexed at 90 degrees and the wrist in a neutral position. The average of three trials will be recorded in kilograms (kg).
Time frame
Single assessment at baseline3
Thumb Active Joint Position Sense (JPS)
Measured using a standard transparent plastic goniometer. The researcher will passively move the thumb to a 30-degree abduction target position. The participant will be asked to actively reproduce this angle. The absolute error between the target angle and the reproduced angle will be recorded in degrees.
Time frame
Single assessment at baseline4
Wrist Joint Position Sense (JPS)
Measured using a goniometer with the participant's eyes closed. The wrist will be passively moved to predetermined positions (30 degrees flexion, 30 degrees extension, 10 degrees radial deviation, and 15 degrees ulnar deviation). The participant will then actively reposition the wrist, and the absolute error will be calculated in degrees.
Time frame
Single assessment at baselineSecondary outcomes
1
Smartphone Screen Time
Objective measurements of the participants' smartphone use over the last 7 days will be obtained. Data will be collected using built-in features such as "Screen Time" for iOS devices or "Digital Wellbeing" for Android devices.
Time frame
Single assessment at baseline2
Smartphone Addiction Scale-Short Form
The Smartphone Addiction Scale-Short Form (SAS-SF) was used to assess smartphone addiction. The scale comprises 10 items rated on a 6-point Likert scale (1 = strongly disagree to 6 = strongly agree), yielding a total score between 10 and 60. Higher scores reflect a higher risk or severity of smartphone addiction.
Time frame
Single assessment at baselineSponsors and contacts
Click on the lead sponsor to view all of their trials.
Source ClinicalTrials.gov
This trial is not recruiting at the moment. You can still explore other options: